Bedstead-fastening



UNITED STATES V ATENT EEIcE.

BEDSTEAD-FASTENING.

Specification forming part of Letters Patent No. 53,972, dated April 17, 1866.

To all whom it may concern Be it known that I, CHARLES M. GILBERT, of the city of Philadelphia, in the county of Philadelphia and State ot' Pennsylvania, have invented a new and Improved Bedstead-Fastening; and I do hereby declare that the following is a full and eXact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature ot' my invention consists of a movable key or pin with beveled edges and containing a slot with an inclined plane. This key or pin is made to Work through a piece of iron containing an opening With a clamp which tits in the slot. of the key. As the key is driven home through this opening` the clamp travels up the inclinedplane of the slot, therebytighteningthejoint or fastening. The beveled edges or flanges are made ot a size and shape to prevent the key slipping back orjoint working loose.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

I lirst prepare a piece of iron or other` material of sufficient strength similar to drawing marked A on plan annexed. This I insert into one of the bed-rails, (shown in Figure E,) and pin itthrough the opening marked l on Fig. A, so as to leave projecting' that portion below the line marked 2 in Fig. A, and containing the opening marked 3 in E. In the bed-post to be fastened I make two openingsone (see 6 in Fig. C) to receive the projecting piece ct' iron above described, and the other a tral'lsverse opening made to receive the key or pin B, this opening to be shaped as marked 7in Fig.D to lit the keyaccurately.

I now prepa-re the key or pin B. rlhis is made ot' iron with beveled edges. Upon one side ot' it is a slot or groove (5 in Fig. B) cut deep at the point and growing gradually shallower, so as 4to form an inclined plane.

The projecting part of the iron A being now introduced, the slit marked 6 (shown in Fig. C) is driven home, and when the bed-rail and bed-post or the portions ot' machinery to be fastened are thus brought together, the key or pin B is driven through the transverse opening marked 7, (shown in Fig.D,) and, passing through the opening marked 3, (shown in Fig. E,) the clamp et enters the slot or groove marked 5 in Fig. B, which is sunk in the key or pin B, and `as the latter is driven home the clamp travels up the inclined plane ot' the slot, tightening thejoint as it goes.

What I claim as my invention, and desire to secure by Letters Patent, is-

The key or pin having the shape which prevents its slipping out of place or Working loose, and containing an inclined plane, and the mode ot applying the said key or pin, as set forth, for the purpose specified.

CHARLES M. GILBERT. Witnesses:

CHARLES W. REEVES, ROBERT K. EAsrBURN. 

